So I had to rent a car for a business trip I'm taking and I hooked up my Blackberry Bold through the auxiliary port to play Pandora. It streams really well, but for some reason when I try to charge my phone at the same time (using the car charger), the music gets really fuzzy and soft. Anyone know what's going on? Any fixes?
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Is that an oem car charger you have? If not I would suspect that. Or the aux wire your using might not be high quality enough to shield it. I would try another aux cable first before dumping the charger. Good luck.
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Id' be more than willing to bet the interference is a common ground problem in the vehicle.
In the image below, you'll see my Ranger came with a factory aux power port to the right of the radio. If you look at the center console I installed from a Ford Explorer, there is another aux power port on the side of it that I wired independently. It has it's own power source/fuse at the fuse block and doesn't share the common ground that the radio and factory aux power port near the radio share.
If I plug my BB into the radio and the charger into the factory aux charger port near the radio, I get interference. If I plug my BB into the radio and the charger into the center console's aux power port, I don't get any interference.